nl_find_nhop
wn_new[i].nh = nl_find_nhop(fibnum, family, uidx, nh_flags, &error);
struct nhop_object *nl_find_nhop(uint32_t fibnum, int family,
nh = nl_find_nhop(attrs.rta_table, attrs.rtm_family, attrs.rta_nh_id,